Answers
An incandescent object refers to an object that emits light as a result of being heated to a high temperature.
Understanding Incandescent ObjectWhen an object is heated, its atoms and molecules gain energy, causing them to vibrate and move more rapidly. This increased energy causes the object to emit electromagnetic radiation, including visible light, which makes the object glow.
Incandescence is commonly observed in everyday objects such as incandescent light bulbs, where a tungsten filament is heated by an electric current until it reaches a temperature that causes it to emit visible light.
As the filament gets hotter, it emits light with a higher intensity and shifts towards shorter wavelengths, starting from a warm red glow and progressing towards a brighter, white light.
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Related Questions
Mr. Daumer wants to create a magnet. He attaches a battery to a metal wire and
wants to wrap the wire around an object. Which object should he wrap the wire around?
a) A battery
b) A pencil
c) A ruler
d) A piece of steel metal.
Answers
The reason people commit informal fallacies is simple and straightforward.
Answers
Answer:
Explanation:
contents
1. FAILURES OF ARGUMENT:
Inconsistency,
Begging the Question,
Disappearing Hedge,
Non Sequitur
2. Non Sequitur FALLACIES OF RELEVANCE
3. Non Sequitur FALLACIES OF WEAK INDUCTION
4. Non Sequitur FALLACIES OF PRESUMPTION
5. Non Sequitur FALLACIES OF AMBIGUITY, VAGUENESS, etc.
6. Nasty persuasive rhetoric, a.k.a. SOPHISTRIES
7. OTHER FALLACIES
the distance between an object and its real image is 40 cm, if the magnification is 3, calculate the object and image distance if the focal length of the lens is 15 cm
Answers
The object distance of the lens is 10 cm and the image distance of the lens is 30 cm.
What is the image and object distance?The object and image distance formed by the lens is calculated by applying the following lens formula.
v + u = 40 ------- (1)
v/u = 3 ------------ (2)
v = 3u
Substitute v into equation (1);
3u + u = 40
4u = 40
u = 40/4
u = 10 cm
The image distance = 3u
= 3 x 10 cm
= 30 cm
Thus, the object distance is 10 cm and the image distance is 30 cm.
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A 0.360-m-long metal bar is pulled to the left by an applied force F. The bar rides on parallel metal rails connected through a 45.0 ohm resistor, as shown in the diagram, so the apparatus makes a complete circuit. The circuit is in a uniform 0.650-T magnetic field that is directed out of the plane of the figure. At the instant when the bar is moving to the left at 5.90 m s, (a) is the induced current in the circuit clockwise or counterclockwise and (b) what is the rate at which the applied force is doing work on the bar?
Answers
(a) The induced current in the circuit is clockwise.
b. To find the power (P) using P = Fd/t or P = Fv (since d/t = v). Here, F = ILB (from the Lorentz force), so P = (ILB)v.
How to solve(a) The induced current in the circuit is clockwise.
This can be determined using the right-hand rule.
As the metal bar moves to the left through the magnetic field directed out of the plane, the generated force on the electrons (Lorentz force) will push them toward the top rail, creating a clockwise current.
(b) To find the rate at which the applied force is doing work on the bar, first calculate the induced EMF (ε) using Faraday's law:
induced EMF (ε) using Faraday's law:
ε = BLv
= (0.65 T) * (0.36 m) * (5.9 m/s)
= 1.389 Tm²/s
= 1.389 V (since 1 Tm²/s = 1 V)
induced current (I) using Ohm's law:
I = ε/R
= 1.389 V / 45 Ω
= 0.03086 A
force (F) from the Lorentz force law, where F = ILB:
F = ILB
= (0.03086 A) * (0.36 m) * (0.65 T)
= 0.00723 N
Finally, we find the power (P) using P = Fv:
P = Fv
= (0.00723 N) * (5.9 m/s)
= 0.04266 W
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Consider a uniformly charged ring in the xy plane, centered at the origin. The ring has radius a and positive charge q distributed evenly along its circumference.1. What is the magnitude of the electric field along the positive z axis? Use k in your answer, where k= 1/4piepsion not.( E(z)=? )2.The ball will oscillate along the z axis between z=d and z=-d in simple harmonic motion. What will be the angular frequency omega of these oscillations? Use the approximation d ll a to simplify your calculation; that is, assume that d^2 + a^2 similar a^2.Express your answer in terms of given charges, dimensions, and constants. ( What is value of omega)
Answers
The magnitude of the electric field along the positive z axis is kqz/√(z^2+a^2)^3/2 , the angular frequency of these oscillations is √(kqq0/ma^3)
1. Given that a uniformly charged ring in the xy plane, centered at the origin.
Radius of the ring(r) = a
positive charge distributed evenly along its circumference = q
k= 1/4piepsion
The electric field can be described as, E = kq/r^2
The force exerted on an electric charge by a charge is F = q0E
Any vector can be projected along the z = A(z)=Acosθ
We know that ∑F =ma
Acceleration along z axis = a =d^2z/dt^2
The equation of motion for a simple harmonic oscillation along z is d^2z/dt^2 = -ω^2z
Here, ω is the cosine function in a right-angled triangle is cosθ = z/√(z^2+a^2)
dE(z)=dEcosθ we know that E = kq/z^2+a^2
To calculate the magnitude of the electric field caused by complete rings, integrate dE(z)=dEcosθ
E(z) = Ecosθ = kq/(z^2+a^2) x z/√(z^2+a^2)
E(z) = kqz/(z^2+a^2)^3/2
2. We know that F= q0E = kqq0z/(z^2+a^2)^3/2
Given The ball will oscillate along the z axis between z=d and z=-d in simple harmonic motion. Let z =d
F = kqq0d/(d^2+a^2)^3/2 = kqq0d/a^3
Force at any point along z = - kqq0z/a^3
We know F = ma =
- kqq0z/a^3 = md^2z/dt^2
d^2z/dt^2= - kqq0z/ma^3
This equation of motion can be compared with the equation of motion for simple harmonic motions to find the angular frequency.
ω =√(kqq0/ma^3)
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a car is moving at 12 m/s and has a mass of 600 kg what is the. kinetic energy of the car?
Answers
Answer:
43200 J
Explanation:
(1/2(mass)) (speed)^2
Oceanic crusts tend to be darker in color than continental crust. This is best explained by the fact that A) Oceanic crust is older than continental crust. B) Oceanic crust is denser than continental crust. C) Oceanic crust is thinner than continental crust. D) Oceanic crust is consist mostly of basalt while continental crust consist mainly of granite.
Answers
Answer:D
Explanation:USA test prep
Oceanic crusts tend to be darker in color than continental crust because
Oceanic crust consist mostly of basalt while continental crust consist mainly
of granite.
Oceanic crust are found under oceans while continental crust have most of
its parts above sea level. This explains why Oceanic crust is thinner than
continental crust due to the compression force from water.
Oceanic crust contains dark-colored rocks such as basalt while continental
crust contain light colored rocks such as granite which is why Oceanic
crusts tend to be darker in color than continental crust.
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An aeroplaneflying above groundnd490m with 100 meterpersecond how far on ground it will strike
Answers
The airplane will strike the ground at a horizontal distance of 490 meters.
To determine how far the airplane will strike on the ground, we need to consider the horizontal distance traveled by the airplane during its flight.
The horizontal distance traveled by an object can be calculated using the formula:
Distance = Speed × Time
In this case, the speed of the airplane is given as 100 meters per second and the time it takes to cover the distance of 490 meters is unknown. Let's denote the time as t.
Distance = 100 m/s × t
Now, to find the value of time, we can rearrange the equation as follows:
t = Distance / Speed
t = 490 m / 100 m/s
t = 4.9 seconds
Therefore, it takes the airplane 4.9 seconds to cover a horizontal distance of 490 meters.
Now, to calculate the distance on the ground where the airplane will strike, we can use the formula:
Distance = Speed × Time
Distance = 100 m/s × 4.9 s
Distance = 490 meters
It's important to note that this calculation assumes a constant speed and a straight flight path. In reality, various factors such as wind conditions, changes in speed, and maneuvering can affect the actual distance traveled by the airplane.
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A gas is enclosed in a cylinder fitted with a light frictionless piston and maintained at atmospheric pressure. When 254 kcal of heat is added to the gas, the volume is observed to increase slowly from 12.0 m^3 to 16.2 m^3. Part A Calculate the work done by the gas. Express your answer with the appropriate units.Part B Calculate the change in internal energy of the gas. Express your answer with the appropriate units.
Answers
A. The work done by the gas enclosed in a cylinder equipped with a light, frictionless piston and maintained at atmospheric pressure, when 254 Kcal of heat is added to the gas, its volume increases slowly from 12.0 m³ to 16.2 m³ = 420 x 10³ kal.
B. The change in internal energy = 6.74 x 10⁵ Joule.
Law of ThermodynamicsThe concept of thermodynamics is an attempt to convert heat into energy, including the process of the flow of energy and the consequences produced by the transfer of energy.
The first law of thermodynamics is an example of the law of the conservation of energy. That is, energy cannot be created and cannot be destroyed. Energy can only change from one form to another. The first law of thermodynamics states that for every process if heat (Q) is given to the system and the system does work (W), there will be a change in internal energy (ΔU).
The equation is:
ΔE = Q + W
ΔU : change in internal energy (Joule)
Q: the amount of heat (Joule)
W: system work (Joule)
We have,
P = 10⁵ ⇒ atmospheric pressure
Q = 254 Kcal = 254 x 10³
ΔV = 16.2 m³ - 12.0 m³
= 4.2 m³
So, the work done by the gas:
W = PΔV
= (10⁵) (4.2)
= 420 x 10³ kal
And, the change in internal energy:
ΔE = Q + W
= (254 x 10³) + (420 x 10³)
= 6.74 x 10⁵ Joule
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Throughout the reflection, make sure
you have a copy of the Student Guide and your data tables.
In this experiment, the
was intentionally manipulated. This was the independent variable
The dependent variable measured was the
Answers
Induced current
what factors would you consider before purchasing a burger.
Answers
Answer:Before buying the burger, I would consider how many portions are actually in it. By the looks of it, this burger has more meat and cheese than is recommended for one portion. I would first see if the restaurant offers a mini-burger, which would probably not have such large portions of meat and cheese. If the restaurant does not offer a smaller-sized burger, I could cut the burger in half and eat the rest during another meal. I could also share the other half with a friend.
Explanation:
PLS HELP ASAP (no links)
What happens to the mass when the volume decreases?
It goes up
It goes down
It stays the same
Answers
Answer:
The mass goes down
Explanation:
Because mass is the quantity of matter contained in a substance And Volume is the space occupied by a substance. So when the volume is less the mass decreases
when the volume decreases what happens to the mass? It goes down
What occurs to mass whilst extent decreases?
If the mass of the object remains the same but the quantity of the item decreases then its density becomes greater. How can you change the density of an object without converting its quantity? If the quantity of the object stays identical but the mass of the object increases then its density turns into more.
Does mass lower while quantity decrease?
Because the volume of the cloth will increase, the mass may even grow. The more the extent of the item the greater the wide variety of atoms gift. this can result in the item having extra mass.
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The same amount of thermal energy was added to two equal masses of Aluminum and Iron. The specific heat of Aluminum is double the specific heat of iron. If the temperature of the Aluminum's mass changes by /\T, what is the change in the Iron's mass temperature?
Answers
Answer:
it is double the temperature change of iron
Question 1
Describe the path light takes as it travels through air and into glass
Question 2
Explain the brightness of light using the wave model of light
Answers
Answer:
here is answer!
Explanation:
Question 1:
Light bends when it transitions from air to glass due to differences in refractive indices. It follows an incident path in air, refracts at the air-glass boundary, and continues through the glass as a transmitted ray. Total internal reflection may occur if the angle of incidence is large enough.
Question 2:
Brightness in the wave model of light is determined by the amplitude and intensity of the light waves. Higher amplitudes and intensities correspond to brighter light. When multiple light waves overlap, their amplitudes add up, resulting in increased brightness
The path light bends as it travels through air and into glass.
What is light?
The light is the ray form of energy obtained from the Sun.
The path of light will look like bended when it has crossed the interface of two medium.
As. the light ray falls on the surface of glass travelling through air, the ray appears to bend after refraction.
Thus, the path of light bends as it travels through air and into glass.
———————
Question 2 :
According to the wave theory of light, the energy of radiation depends only on the intensity or wave amplitude (brightness), not the frequency (what type of light; e.g red light or green light; visible light or gamma) According to the particle theory of light states the energy of radiation depend only on the frequency
What is every type of compound
Answers
Answer:
There are four types of compounds, depending on how the constituent atoms are held together: molecules held together by covalent bonds. ionic compounds held together by ionic bonds. intermetallic compounds held together by metallic bonds.
Explanation:
A 1100 kg safe is 1.8 m above a heavy-duty spring when the rope holding the safe breaks. The safe hits the spring and compresses it 42 cm .
Part A: What is the spring constant of the spring?
Express your answer with the appropriate units.
Answers
1000
k
g
safe is
2
.
0
m
above a heavy-duty spring when the rope holding the safe breaks. The safe hits the spring and compresses it
50
c
m
. What is the spring constant of the spring?
The spring constant of the spring is
k
=
156
,
960
N
/
m
.
SuperPointParticleDog is playing tug of war with two other dogs, Isaac and Newton. Isaac is pulling with a force of 255 N, 13 degrees North of East on one rope attached to a ball. Newton is pulling with a force of 156 N, 34 degrees South of East on another rope attached to the ball. If the ball is moving with constant momentum toward SuperPointParticleDog, what is the East/West component of her force on the ball?
Answers
The East/West component of SuperPointParticleDog's force on the ball is -115.7 N. (Westward).
How to explain tje informationIsaac's force:
Magnitude: 255 N
Angle: 13 degrees North of East
x-component: 255*cos(13) = 245.1 N (Eastward)
y-component: 255*sin(13) = 58.1 N (Northward)
Newton's force:
Magnitude: 156 N
Angle: 34 degrees South of East
x-component: 156*cos(34) = 129.4 N (Westward)
y-component: 156*sin(34) = 86.5 N (Southward)
Now we can add the x- and y-components of the forces to find the net force:
Net force:
x-component: 245.1 N - 129.4 N = 115.7 N (Eastward)
y-component: 58.1 N - 86.5 N = -28.4 N (Southward)
The net force has an Eastward component of 115.7 N. Therefore, the East/West component of SuperPointParticleDog's force on the ball is -115.7 N. (Westward).
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1. A ball is at rest on the top of a hill (see the figure).
At the top of the hill, the ball will have [the maximum value of its, no, the minimum value of its] gravitational potential energy and [no, the maximum value of its] kinetic energy. If the ball rolls down the hill then, its [gravitational potential energy, kinetic energy] is converted to [gravitational potential energy, kinetic energy] when it gets to the ground.
2. Get your stopwatch ready and prepare to drop the object from the height h you selected in the previous step. You should drop the object so its [bottom, top, middle] part is initially at the height h. The initial speed of the ball [zero, 9.8 m/s, 9.8 m/s^2, depends on the height h] You'll need to measure the time from when the ball leaves your hand to exactly when it hits the ground [ for the first time it bounces, after it bounces and then comes to rest, both the first time and then after it bounces; then average the two times]
.
Answers
2. When dropping the object, you should drop it so its top part is initially at the height h. The initial speed of the ball will be zero since it starts from rest. To measure the time it takes for the ball to hit the ground, you should start the stopwatch when the ball leaves your hand and stop it when the ball hits the ground for the first time. It is recommended to perform multiple trials and calculate the average time to minimize errors.
How many half lives will it take for 300 grams of Carbon-14 to decay to 18.75 grams?
Answers
Answer:
16
Explanation:
300/18.75
If the wind bounces backward from the sail, will the craft be set in motion?
Answers
If the wind bounces backward from the sail, the boat will not be set in motion as no forward force is generated. For the boat to move forward, the sail must be positioned to catch the wind and create lift in the desired direction.
If the wind bounces backward from the sail, the craft will not be set in motion. In order for a sailboat to move forward, the wind must push on the sail, creating a force that propels the boat forward through the water. When the wind hits the sail, it creates lift in a direction perpendicular to the sail's surface, which results in a forward force that propels the boat.
However, if the wind bounces backward from the sail, it does not create lift and therefore does not result in a forward force on the boat. Instead, the wind is redirected in a different direction, and the boat remains stationary. In order for the boat to move forward, the sail must be positioned to catch the wind and create lift in the desired direction, propelling the boat forward.
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what is the value of pi(8.104)^2 written with correct significant numbers
Answers
Answer:206.3
Explanation:
what is kinematics ?
explain ~
Answers
Kinematics is the branch of physics and a subdivision of classical mechanics concerned with the geometrically possible motion of a body or system of bodies without consideration of the forces involved. :)
Answer:
Kinematics is a branch of mechanics that deals with pure motion, without reference to the masses or forces involved in it.
Explanation:
Ex. X=2t+1 here x is related to t which is time(function of time)
this is a 3 part question20) A 9.50-g bullet has a speed of 1.30 km>s. (a) What is its kinetic energy in joules? (b) What is the bullet’s kinetic energy if its speed is halved? (c) If its speed is doubled?
Answers
Given that mass of bullet, m = 9.50 g = 0.0095 kg
speed of bullet, v is 1.30 km/s
(a) Kinetic energy is given by the formula
\(K\mathrm{}E\text{. = }\frac{1}{2}mv^2\)Substituting the values in the above formula, we get
\(K\mathrm{}E\mathrm{}=\frac{1}{2}(0.0095)(1.30)^2=8.0275\times10^{-3}\text{ J}\)(b) Speed of bullet is v/2
Sustituting this value in the formula of kinetic energy, we get
\(\begin{gathered} K.E._1=\text{ }\frac{1}{2}m(\frac{v}{2})^2 \\ =\frac{1}{2}\times(0.0095)\times(\frac{1.30}{2})^2 \\ =2.0068\times10^{-3\text{ }}J \end{gathered}\)(c) Speed of bulllet becomes 2v
Sustituting this value in the formula of kinetic energy, we get
\(\begin{gathered} K.E._2=\text{ }\frac{1}{2}m(2v)^2 \\ =\frac{1}{2}\times(0.0095)\times(2\times1.30)^2 \\ =0.03211J \end{gathered}\)14.A shopper uses a force of 245 N is needed to push a loaded shopping cart down thestore aisle that is 43m long. How much work does the shopper do in pushing the cart?15.What work is done by a crane that'lifts a 618kg beam a height of 130m?AT16.A pulley system lifts a j8kg box a height of 15 m in 18 seconds. What is the power of thepulley system?17. A 15.0 kg water balloon is dropped from a balcony. If it strikes the ground with a speedof 20 m/s, how high is the balcony?3000
Answers
Given
Shopper: Force of 245N
43m long
Procedure
In physics, work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, it is often represented as the product of force and displacement.
\(\begin{gathered} W=F\cdot d \\ W=245N\cdot43m \\ W=10535\text{ N}\cdot\text{m} \end{gathered}\)The work done is 10535 N*m (Newton meters)
IBM has a fast computer that it calls the Blue Gene/L that can do '136.8
teracalculations per second. How many calculations can it do in a microsecond?
Answers
Answer:
138.6 megacalculations
Explanation:
This is a pretty straightforward one.
All it needs is to convert the degree of measurement.
Dimensions in physics are attributed names, which state the power to which they're are raised. Just as how
Kilo and Mega means the numbers are raised to the power of 3 and 6 respectively. There also exists the ones that indicates how small, such as milli and micro, which are to the powers of -3 & -6.
The question says the IBM computer calculates at an astonishing 136.8 teracalculations.
Tera in physics means it's raised to the power of 12. Thus, the IBM calculates at an astonishing rate of
136.8*10^12 calculations per second.
We're then asked how many calculations it does in 1 micro second. Like I had highlighted earlier, 1 micro second is 1 raised to the power of -6. Or succinctly put,
1 micro second = 1*10^-6.
If the IBM does
138.6*10^12 = 1 second,
Then it does
x = 1*10^-6 second.
When we cross multiply, we have
138.6*10^12 * 1*10^-6, and that is
138.6*10^6 calculations, or say, 138.6 megacalculations.
The IBM does 138.6 megacalculations in 1 micro second, which is still astonishing, by the way
3,000 times , 1,000 times 300,000
Answers
3,000 x 1,000 x 3,000 =
FMultiply the whole numbers:
Phoebe wants to measure the volume of a small, irregularly
shaped rock. Which of the following instruments would be best
for Phoebe to use?
Answers
Answer:
A graduated cylinder
Explanation:
is a computer translucent?
Answers
Answer:
no it's opaque
hope this helps
have a good day :)
Explanation:
What demonstrates the flow of energy and materials through
ecosystems in a single pathway?
a food chain
b food web
c biogeochemical cycle
Answers
A food web also shows the flow of energy and materials through an ecosystem but in a complex web, not a single chain. A biogeochemical cycle does not deal with the flow of energy/materials through an ecosystem at all.
A 75.0 kg man pushes on a 500,000 kg wall for 250 s but it does not move.
a. How much work does he do on the wall? ____________
b. How much energy is used?__________
c. How much power is exerted?____________
Answers
Since no work is done, the power exerted is zero. Therefore, the man exerts no power on the wall.
What is force?In physics, force is defined as any action that can change the motion of an object or cause an object to accelerate. Force is a vector quantity, meaning that it has both magnitude (size or strength) and direction. The unit of force in the International System of Units (SI) is the Newton (N), which is defined as the amount of force required to accelerate a mass of one kilogram at a rate of one meter per second squared (1 N = 1 kg × 1 m/s^2). Force can be measured using a variety of instruments, such as spring scales, strain gauges, or force plates. Some common types of forces include gravitational force, electromagnetic force, frictional force, and normal force. The study of forces and their effects on the motion of objects is known as mechanics and is a fundamental concept in physics.
Here,
a. The man does not do any work on the wall because the wall does not move. Work is only done when there is a displacement in the direction of the force applied.
b. Since no work is done, no energy is used or transferred.
c. The power exerted by the man can be calculated using the formula:
Power = Work / Time
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